► Machine Screws

Machine Screws – Precision Fasteners for Machinery, Panels & Electronics Machine screws are precision-engineered fasteners designed for metal-to-metal & metal-to-plastic connections in machinery, electrical panels, appliances, & electronics. These screws feature uniform threading along the shaft & are used with pre-tapped holes or nuts for secure, flush connections. We stock...

Machine Screws – Precision Fasteners for Machinery, Panels & Electronics

Machine screws are precision-engineered fasteners designed for metal-to-metal & metal-to-plastic connections in machinery, electrical panels, appliances, & electronics. These screws feature uniform threading along the shaft & are used with pre-tapped holes or nuts for secure, flush connections. We stock a wide range of head types, drive styles, & thread sizes, making them ideal for assembly, repair, & component fastening across multiple industries.

What’s in This Collection:
► Flat, pan, round & hex head machine screws
► Phillips, slotted, Torx & hex drive types
► Metric & imperial sizes in various thread pitches
► Brass, stainless steel & zinc-plated steel options

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  • BBI - 1/4"-20x5/8" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580619
    BBI - 1/4"-20x5/8" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580619
    BBI - 1/4"-20x5/8" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580619This BBI 1/4"-20x5/8" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: 1/4"-20x5/8" Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI quality...
    $0.74
    $0.74
  • BBI - 1/4"-20x1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580615
    BBI - 1/4"-20x1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580615
    BBI - 1/4"-20x1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580615This BBI 1/4"-20x1/2" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: 1/4"-20x1/2" Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI quality...
    $0.71
    $0.71
  • BBI - #10-24x3" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580479
    BBI - #10-24x3" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580479
    BBI - #10-24x3" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580479This BBI #10-24x3" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x3" Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI quality...
    $1.13
    $1.13
  • BBI - #10-24x2 1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580471
    BBI - #10-24x2 1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580471
    BBI - #10-24x2 1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580471This BBI #10-24x2 is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x2 Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI...
    $0.99
    $0.99
  • BBI - #10-24x2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580463
    BBI - #10-24x2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580463
    BBI - #10-24x2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580463This BBI #10-24x2" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x2" Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI quality...
    $0.73
    $0.73
  • BBI - #10-24x1 3/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580455
    BBI - #10-24x1 3/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580455
    BBI - #10-24x1 3/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580455This BBI #10-24x1 is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x1 Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI...
    $0.72
    $0.72
  • BBI - #10-24x1 1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580447
    BBI - #10-24x1 1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580447
    BBI - #10-24x1 1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580447This BBI #10-24x1 is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x1 Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI...
    $0.71
    $0.71
  • BBI - #10-24x1 1/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580437
    BBI - #10-24x1 1/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580437
    BBI - #10-24x1 1/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580437This BBI #10-24x1 is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x1 Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI...
    $0.59
    $0.59
  • BBI - #10-24x1" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580431
    BBI - #10-24x1" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580431
    BBI - #10-24x1" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580431This BBI #10-24x1" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x1" Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI quality...
    $0.58
    $0.58
  • BBI - #10-24x3/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580423
    BBI - #10-24x3/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580423
    BBI - #10-24x3/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580423This BBI #10-24x3/4" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x3/4" Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI quality...
    $0.52
    $0.52
  • BBI - #10-24x5/8" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580419
    BBI - #10-24x5/8" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580419
    BBI - #10-24x5/8" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580419This BBI #10-24x5/8" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x5/8" Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI quality...
    $0.50
    $0.50
  • BBI - #10-24x1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580415
    BBI - #10-24x1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580415
    BBI - #10-24x1/2" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580415This BBI #10-24x1/2" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x1/2" Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI quality...
    $0.49
    $0.49
  • BBI - #10-24x3/8" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580411
    BBI - #10-24x3/8" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580411
    BBI - #10-24x3/8" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580411This BBI #10-24x3/8" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x3/8" Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI quality...
    $0.47
    $0.47
  • BBI - #10-24x1/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580409
    BBI - #10-24x1/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580409
    BBI - #10-24x1/4" (Ft) - Flat Slot Machine Screw Flat Head Slotted Zinc Cr+3 | 580409This BBI #10-24x1/4" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x1/4" Finish: Zinc Plated for corrosion resistance Drive: Slotted Genuine BBI quality...
    $0.50
    $0.50
  • BBI - 5/16"-18x9/16" x 7/32" - Hex Machine Screw Nut Low Carbon Zinc Cr+3 | 325220
    BBI - 5/16"-18x9/16" x 7/32" - Hex Machine Screw Nut Low Carbon Zinc Cr+3 | 325220
    BBI - 5/16"-18x9/16" X 7/32" - Hex Machine Screw Nut Low Carbon Zinc Cr+3 | 325220This BBI 5/16"-18x9/16" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: 5/16"-18x9/16" Finish: Zinc Plated for corrosion resistance Drive: Hex Genuine BBI quality...
    $0.43
    $0.43
  • BBI - 1/4"-20x7/16" x 3/16" - Hex Machine Screw Nut Low Carbon Zinc Cr+3 | 325200
    BBI - 1/4"-20x7/16" x 3/16" - Hex Machine Screw Nut Low Carbon Zinc Cr+3 | 325200
    BBI - 1/4"-20x7/16" X 3/16" - Hex Machine Screw Nut Low Carbon Zinc Cr+3 | 325200This BBI 1/4"-20x7/16" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: 1/4"-20x7/16" Finish: Zinc Plated for corrosion resistance Drive: Hex Genuine BBI quality...
    $0.25
    $0.25
  • BBI - #10-24x3/8" x 1/8" - Hex Machine Screw Nut Low Carbon Zinc Cr+3 | 325160
    BBI - #10-24x3/8" x 1/8" - Hex Machine Screw Nut Low Carbon Zinc Cr+3 | 325160
    BBI - #10-24x3/8" X 1/8" - Hex Machine Screw Nut Low Carbon Zinc Cr+3 | 325160This BBI #10-24x3/8" is a machine screw for fastening into tapped holes and nuts.► Key Features Size: #10-24x3/8" Finish: Zinc Plated for corrosion resistance Drive: Hex Genuine BBI quality...
    $0.22
    $0.22
  • Brighton Best - #8-32x11/32"x1/8" - HEX MS NUT COARSE LOW CARBON ZINC CR+3 | 325140
    BBI - #8-32x11/32" x 1/8" - Hex Ms Nut Coarse Low Carbon Zinc Cr+3 | 325140
    BBI - #8-32x11/32" X 1/8" - Hex Ms Nut Coarse Low Carbon Zinc Cr+3 | 325140This BBI #8-32x11/32" is a nut for use with matching threaded fasteners.► Key Features Size: #8-32x11/32" Thread: Metric Coarse Finish: Zinc Plated for corrosion resistance Genuine BBI quality for...
    $0.23
    $0.23
  • Brighton Best - #6-32x5/16"x7/64" - HEX MS NUT COARSE LOW CARBON ZINC CR+3 | 325120
    BBI - #6-32x5/16" x 7/64" - Hex Ms Nut Coarse Low Carbon Zinc Cr+3 | 325120
    BBI - #6-32x5/16" X 7/64" - Hex Ms Nut Coarse Low Carbon Zinc Cr+3 | 325120This BBI #6-32x5/16" is a nut for use with matching threaded fasteners.► Key Features Size: #6-32x5/16" Thread: Metric Coarse Finish: Zinc Plated for corrosion resistance Genuine BBI quality for...
    $0.75
    $0.75
  • Brighton Best - #5-40x5/16"x7/64" - HEX MS NUT COARSE LOW CARBON ZINC CR+3 | 325100
    BBI - #5-40x5/16" x 7/64" - Hex Ms Nut Coarse Low Carbon Zinc Cr+3 | 325100
    BBI - #5-40x5/16" X 7/64" - Hex Ms Nut Coarse Low Carbon Zinc Cr+3 | 325100This BBI #5-40x5/16" is a nut for use with matching threaded fasteners.► Key Features Size: #5-40x5/16" Thread: Metric Coarse Finish: Zinc Plated for corrosion resistance Genuine BBI quality for...
    $0.22
    $0.22

Consistent Fastening for Critical Applications

Designed for tight tolerances & precise fastening, our machine screws support everything from panel construction to equipment repairs. Whether you're working with sheet metal, mounting hardware, or assembling enclosures—these screws deliver consistent performance.

► Trusted by engineers, fabricators & electricians

► Available in corrosion-resistant finishes

► Compatible with manual or powered drivers

Frequently Asked Questions

It depends. Machine screws can be fastened into pre-tapped holes or used with matching nuts if a threaded hole is not available.

Yes. We offer small-diameter, fine-thread machine screws in brass & stainless steel that are ideal for delicate electronics or terminal components.

Flat heads are great for flush finishes, while pan & round heads offer more surface area & grip. Choose based on your assembly needs & appearance preferences.

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BBI

BBI